Installation & Maintenance Instruction
CET Group Co., Ltd. www.cetgroupco.com
20. Slide the lubricant application roller to the front, then remove it.
21. Remove the drum cleaning blade by removing the two screws. Then lift the blade out
using a flat bit screwdriver.
22. Remove waste toner with a toner vacuum. Be sure to remove waste toner from the
waste auger pipe as well. Do not use a conventional vacuum cleaner.
23. Unpack the new CET drum unit rebuild kit. CET501001 – Black, CET501002 - C, M, Y
24. Kit contents:
- OPC Drum
- Drum cleaning blade
- Primary Charge Roller (PCR)
- PCR cleaning roller
- Drum lubricant bar
- Drum sealing felts (rear and front)
- Lubricant application roller
- Lubricant application blade
25. Remove the old sealing felts from the drum unit.
26. Take out the new CET sealing felts.
Do not mix up the front and rear felts.
Locate where each felt’s cut corner will mount onto the drum unit before you adhere
them.
27. Clean the mounting surface with isopropyl alcohol prior to adhering the felts.
28. Adhere the bottom side of the sealing felts to the drum unit. Do not adhere the upper
side yet.
29. Clean the recovery blade with a clean, dry, lint free cloth.
30. Make sure the corners of the recovery blade are on the top of the sealing felts.
31. Take out the new CET drum cleaning blade.
32. Reinstall the new drum cleaning blade and insert two screws to hold it in place.
33. Clean the two lubricant application roller bushings with a lint free cloth.
34. Take out the new CET lubricant application roller.
35. The keyed end of the roller will be installed on the rear side of the drum unit.
36. Place one of the bushings onto the keyed end of the roller.
37. Lift up the sealing felts, then install the roller underneath them.
38. Reinstall the other lubricant application roller bushing to the front end of the roller.
39. Firmly press the sealing felts to activate the adhesive. These are the upper sides from
#28.
40. Take out the new CET lubricant application blade.
41. Reinstall the lubricant application blade and insert the two screws to secure it.
42. Reinstall the waste auger pipe and insert a screw to secure it.
43. Unsnap the PCR saddles from the housing using a flat bit screwdriver.
44. Remove the PCR and the PCR cleaning roller, then remove the gear and the saddles.
45. Take out the new CET PCR and PCR cleaning roller.
Leave the protective wrap on the PCR until installation.
46. Observe the keyed end of the PCR because when it is installed it should be opposite to
the PCR contact side of the housing.
47. Clean the PCR contact with a cotton swab, then apply a small amount of conductive
grease onto it.
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